General Maintenance 4
5975/5977 Series MSD Operation Manual 119
To Attach Wiring from the Ion Source to the feedthrough board
Materials needed
• Gloves, clean, lint-free
• Large (8650-0030)
• Small (8650-0029)
• Pliers, long-nose (8710-1094)
Procedure
Attach the internal front analyzer electrical leads to the pins specified in
Table 23 on page 119. The extractor source has an additional brown extractor
wire that is missing from the standard source.
The wiring is described in Table 23 and illustrated in Figure 20 on page 120
and Figure 21 on page 121. The term “Board” in the table refers to the
feedthrough board located next to the ion source.
Table 23 EI source board wiring
Wire description Feedthrough board label Connects to source/quad
Green beaded (2) Board, top left (HTR) Quad heater
White with braided cover (2) Board, top (RTD) Quad sensor
White (2) Board, center (FILAMENT-1) Filament 1 (top)
Red (1) Board, center left (REP) Repeller
Black (2) Board, center (FILAMENT-2) Filament 2 (bottom)
Orange (1) Board, top right (ION FOC) Ion focus lens
Blue (1) Board, top right (ENTR LENS) Entrance lens
White beaded (2) Board, bottom left (HTR) Ion source heater
White (2) Board, bottom (RTD) Ion source sensor
Brown (1) Board, middle left Extractor lens
(Extractor EI ion source only)
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